Geolite Clay Pebbles, 10 Liter Bag Seed Starter Plugs but the BioTherm DO Stat

but the BioTherm DO Stat works with the TOOB to optimize DO levels at your set point

The Maxi Controller can also work with asynchronous times for example

Do not apply (or store) in direct sunlight or in temperatures above 90 degrees Fahrenheit

you can choose to adjust for either pH up (alkali) or pH down (acid)

Geolite Clay Pebbles, 10 Liter Bag Seed Starter Plugs but the BioTherm DO StatMade from 100% natural clay, GEOLITE Clay Pebbles are clean, pH stable and offer great aeration and drainage. Due to their unique structure and large surface area, GEOLITE Clay Pebbles offer the ideal environment to foster root development. Perfect for hydroponics, Hydroculture, and Aquaponics or simply decoration. Great soil aeration and drainage Perfect for Hydroponics, Hydroculture, and Aquaponics pH neutral Low EC 8 20 mm size